Door-operating mechanism



2 SHEETS-SHEET l.

Patented July 27, 1920.

J. BALoc.

DOOR OPERATING MECHANISM.

APPLICATION r|LED1uNE5,1919.

1. BALOC.

DOOR OPERATING MECHANISM.

APPLICATION ULED JUNE. 191.9.

Patented July 27, 1920.

2 SHEETS-SHEET 2.

@LA JHn BALoc Umm/frs.

-iJNiTED ls'rcriss PATENT. GFFICE.

JOHN BALoc, or HAZLETQN, rnmasia.valigia."

To all whom t may concern: i A

Be it known that I, lJOHN BALoo, a citizen of the United States, and a resident, of Hazleton, in the county of Luzerne and State Yof Pennsylvania, have invented anew and Improved Door-Operating Mechanism, of which. the followingA is a full, clear, and exact description. n y

The object of the invention is to provide a newand improved door` operating mechanism more especially designed for opening and closing garage doors and the like, and arrangedto open the doors by an incoming or advancing automobile or other vehicle, to keep the doors open until the vehicle has safely passed the doors and finally to close the doors and hold the saine in a closed position. Another object is to accomplish the opening and closing of the doors without requiring any attention on the part of the person in charge of the vehicle.

lith these and other objects in view, the invention consists of certain novel features of construction, as hereinafter shown and described and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional plan view of the door operating mechanism as applied to the doors of a gara e;

Fig. 2 is a front elevation of the same with parts shown in section;

Fig. 3 is a transverse section of the same on the line3-3 of Fig. 1;

Fig. L1 is an enlarged sectional front elevation of a portion of the door operating mechanism on the line 4-#1 of Fig. 1; and

Fig. 5 is an enlarged sectional plan view of the same on the line 5 5 of Fig. 4.

The door operating mechanism is shown applied to the doors 10 of a garage 11 and the said doors 10 are attached to vertically disposed pintles or shafts 12 by the use of door straps 13. The lower ends of the pintles 12 are journaled in steps 14 and the upper ends of the said pintles are journaled in bearings 15. The steps 1 4 and the bearings 15 are attached to the sides 16 of the door frame having the usual opening 17 for the passage of an automobile or other vehicle going in or out of the garage.

The lower ends of the pintle 12 are pro- Specicationlof Letters-Patent; PatentedJuly Application filed June 5, 1919. Serial No. 301,9QL f DOOR-OPERATING MECHANISM.

vided withmspiral` grooves 20. into which project pins 21 securedto sleeves 22imountedto slide up/andy down onthe lower. ends ofthe pintles orshafts 12with aview to,- turnA thesaid pintles and thereby open and close .thedoorslth asliereinafter more fullyI explained. The sleeves 22 are provided with lugsy 25 connected byl pivots 26 with arms 21,'projecting sidewise from runways 28 extending inopenings29 formed in the, roadway orfioon 30 leading tothe interior of the garage., The runways 28 are con-` nected at their innerl ends by `hing es, 3*5 and 36 to the middle portion of the Hoor, as plainly indicated in Fig. 1, and the said runways 28 rest on springs 10 mounted on the framework 41 supporting the floor 30 at the door frame 1G, as plainly illustrated in Figs. 1, 3 and 4;. Normally the runways 28 are fiush with the floor 30 and extend from a distance outside the door opening to a distance within the garage to permit the wheels of an automobile or other vehicle to readily pass over the runways into or out of the garage.

The doors 10 are normally in a closed position and the runways 28 are held in uppermost position by their springs 40. Now

vwhen an automobile passes up the runways 28 toward the doors 10 then the weight of the vehicle causes the runways 28 toswing downward and indoing so the arms 27 of the runways move the sleeves 22 downward on the pintles 12 whereby the pins 21 in engagement with the spiral grooves 20 cause the pintles to turn and thereby swingV the doors 10 into open position to allow the automobile to pass over the runways 28 into the garage. lVhen the rear wheels of the automobile finally leave the innerends of the runways 28 then the latter return to their normal uppermost position by the action of the springs 10 and in doing so the sleeves 22 are moved back to uppermost position whereby their pins 21 turn the pintles 12 in a reverse direction thus closing the doors 10. It is understood that when. the' automobile backs out of the garage and theV rear wheelspass onto the inner ends of the runways 28 then the latter swing downward and Vthe doors 10 are opened to allow the automobile to pass out of the garage, and when the front wheels finally leave the outer ends of the runways 28 the doors 10 return to closed position. n

From the foregoing it will be seen that by iio i the arrangement described the person ink Having thus de-scribed my invention, I

' claim as new and desire to secure by Letters Patent :-V

ways hinged at their longitudinal edges to swing up and down, vsaid runways being of a length Yto extend across and on each side of the doorway, springs supporting the runways normally inuppermost position, pintles mounted "to turn, a door secured to veach pintle, and connections" between thev free edges of the runways and pintles for hinged vrunway adapted to swing upward and downward, said runway' being of a length to extend across the doorway and on each side of the same, a spring for supporting the runway normally in uppermost position,y a door, a pintle mounted to turn and o n which the" door is secured, a member mounted on the lower end of the spindle,

Y n 1 and pivotally connected with the runway, l. In a door operating mechanism, runand a groove and pin connection between the said member and pintle.

3. In a door operating mechanism, -a runway Vhinged ateach end, said runway extending across the doorway and on each side of the same, a spring arrange'd'below and'interrnediate of the Vends of the runway and holding the same normally in upperl most position, a spindle having a spirally grooved lower end and mounted to turn, a door secured to the spindle, a sleevefmounted on the spindle, and having ajpin engaging the groove thereof, and an arm on theV runway and pivoted to the lsleeve.

' JOHN BALOC. 

